高等学校化学学报

高等学校化学学报 ›› 1986, Vol. 7 ›› Issue (5): 475.

• 研究简报 • 上一篇    

1-辛烯的Ziegler-Natta聚合动力学(Ⅰ)—稳态动力学规律

杨士林, 范志强, 封麟先   

  1. 浙江大学化学系
  • 收稿日期:1985-02-16 出版日期:1986-05-24 发布日期:1986-05-24

Kinetics of the Ziegler-Natta Polymerization of 1-Octene (Ⅰ)—The Kinetics of the Stationary Period

Yang Shilin, Fan Zhiqiang, Feng Linxian   

  1. Department of Chemistry, Zhejiang University, Hangzhow
  • Received:1985-02-16 Online:1986-05-24 Published:1986-05-24

PDF (PC)

摘要： 过去对C6—C20α-烯烃的Ziegler-Natta聚合动力学仅有少量研究,未发现与乙烯、丙烯的聚合行为有显著不同。但1-辛烯在烃类溶剂中的聚合是溶液聚合,这是与析出聚合的主要差别。本文发现并研究了1-辛烯以α-TiCl3-AlEt3催化在正庚烷中聚合时的特殊动力学行为,对此提出了初步解释。

Abstract: The kinetic behavior of polymerization of 1-octcne in n-heptane based on α-TiCl3-AlEt3 (or -Al(i-Bu)3, -AlEt3Cl) catalysts was studied. The rate curves could be divided into 1 to 3 stages and corresponding1 to 3 stationary periods, in which the stationary rates increase in the approximate ratios 1:2:4, The phenomenon was caused by the corresponding stair-like rising of the number of active centers, and was suggested to be the result of the breaking of TiCl3 crystals under the effect of propagating chains.

TrendMD: